Question

How to generate a service and include the provider in one step with Angular CLI?

I'm using the Angular CLI and want to generate a service while automatically including the provider. Can someone guide me on how to do this in a single step?

Answer 1

In Angular, you can generate a service and include it in the provider's array in one step using the --providedIn option while creating the service with Angular CLI. This option automatically configures the service to be available in the specified module or in the root injector.

To generate a service with the provider included in the root injector (which is the most common scenario), you can run the following command:

ng generate service your-service-name --providedIn=root

Example:

If you want to generate a service named AuthService, you would run:

ng generate service auth --providedIn=root

This would create the auth.service.ts file and add the @Injectable({ providedIn: 'root' }) decorator automatically, meaning Angular will handle the service's provider configuration.

If you want to specify a different scope for the provider (like a specific module), you can replace root with the name of the module, like so:

ng generate service auth --providedIn=app

This would register the service in the AppModule.